Tail lights, brights not working

I recently installed an after-market CD player into my 07 Taco and since then my climate control backlights, tail lights and high-beams are not working. Brake lights and low-beams operate fine. I checked fuses briefly last night when I realized all these lights suddenly stopped working and didn't see anything that was blown. I will check again this evening. Any ideas of what this could be outside of a blown fuse?

 

Some aftermarket radios have a wire marked "Dimmer" or something similar. I've seen instances where people have wired that into their back lighting circuit for the factory radio and it has caused similar issues. Might check that.

 

Check your TAIL fuse. Your dash illumination is powered off the taillight circuit.

My guess is that the new head unit's illumination / dimmer wiring connection is the root cause.

 

Probably the dimmer wire.

I never connect the dimmer wire when I install headunits.